Finding the Fourth Proportional to 77,963.05, 116,745.31 and 42,864.13

Step by Step Solution

1. Step 1: Write the proportion equation
   77,963.05 : 116,745.31 = 42,864.13 : x
2. Step 2: Convert to fraction form
   77,963.05/116,745.31 = 42,864.13/x
3. Step 3: Cross multiply
   77,963.05x = 116,745.31 × 42,864.13
4. Step 4: Simplify right side
   77,963.05x = 5,004,186,144.73
5. Step 5: Solve for x
   x = 5,004,186,144.73/77,963.05
6. Step 6: Final answer
   x = 64,186.64